Safety
Admixtures
Concrete Knowledge
QC
Truck Knowledge
100
What are the standard PPE items that should worn by a professional mixer driver?
100
Enhancement of concrete properties and economical budgeting price
What are the general purpose for admixtures in concrete?
100
Class I Class II
Class III Class IV
Class V
What are the different cement classes of cement
100
What is a slump test.
100
Front discharge Volumetric
Rear discharge Paddle
What are examples of concrete delivery trucks.
200
Who is responsible for safety at work?
Everybody plays a role in safety at work.
200
Added to create smaller bubbles in concrete, improves resistance of concrete to freezing and thawing
What is Air Entrainment Admix (AEA)
200
cementitious material water
coarse & fine aggregates
What are the 4 primary constituents in a concrete mix design.
200
The chemical reaction that occurs when water is added to cement, causing it to harden and gain strength.
What is hydration?
200
Steer 4/32
Drive 2/32
What are the minimum tire tread depths when performing a Concrete Mixer inspection.
300
Slips, Trips, and Falls
What is the most common RMC workplace injury/incident?
300
Chemical Admixes Cold Materials
Sugar Excess Water
Petroleum based products
Materials that can slow the hydration of cement down
300
Fly ash Calcium carbonate
Silica Fume Calcined clay
Calcined shale Rice husk
Ground granulated blast furnace slag (GGBFS)
What are Secondary Cementous Materials (SCM).
300
150#
Assumed normal weight of concrete per cubic foot
400
What are the 5 key rules in the Smith System?
400
Numbers used to measure how smooth and level a concrete floor is.
What are FF and FL #'s in concrete.
500
If a truck has possibly been electrified.
When is the only time it is advisable to jump clear and free from a truck.
500
Increases workability without affecting w-c ratio, reduces cost, increases concrete strength indirectly
What function do Plasticizing admixtures play in mix design.
500
Joseph Aspdin (25 December 1778 – 20 March 1855) was an English bricklayer, businessman, inventor, and stonemason.
Who is credited for the creation of the modern Portland cement process.
500
The addition of excess water
What is the most damaging ingredient a mixer driver can control the addition of.